As stated, it protects the electric/electronic component's in the camper from many varying issues such as low voltage/high voltage/lost neutral/reverse polarity/missing ground etc.
I camped at a friends place and was hooked up via 200 foot of cheap a-- extension cord. The unit protected my camper from the low voltage that was delivered to the camper by cutting it off.
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2018 Chevy 3500 LTZ Dually Diesel 4x4 CCLB
2011 Montana 3455 SA. 6 point level up. Disc brakes. Curt Q24 Hitch. 5 step glow steps
Progressive EMS. Valterra tank valves. Sailun G637 tires. ARP fridge control. All led lighting. Mor Ryde IS
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